CN108712707A - Loud speaker - Google Patents
Loud speaker Download PDFInfo
- Publication number
- CN108712707A CN108712707A CN201810591784.8A CN201810591784A CN108712707A CN 108712707 A CN108712707 A CN 108712707A CN 201810591784 A CN201810591784 A CN 201810591784A CN 108712707 A CN108712707 A CN 108712707A
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- Prior art keywords
- voice coil
- magnetic
- loud speaker
- ring
- conductive board
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 230000010287 polarization Effects 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 7
- 238000005457 optimization Methods 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 5
- 238000004026 adhesive bonding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005686 electrostatic field Effects 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
There is a kind of loud speaker vibrational system and magnetic circuit system, vibrational system to include upper diaphragm component and drive the voice coil of the upper diaphragm component vibration；Magnetic circuit system includes intermediate magnet steel and the intermediate magnetic conductive board for being attached at the intermediate magnet steel surface, it is additionally provided with outer steel around intermediate magnet steel, the top of outer steel is equipped with upper conduction magnetic board, and the lower section of outer steel is equipped with lower magnetic conductive board, the gap passed through for voice coil is equipped between upper conduction magnetic board and intermediate magnetic conductive board；The voice coil is at least partly suspended between intermediate magnet steel and outer steel；Further include lower diaphragm unit, the lower diaphragm unit includes gasket and lower ring, and the gasket is attached at the lower surface of voice coil, and one end of lower ring is attached at the lower surface of gasket, and the other end of lower ring is attached at the lower surface of outer steel.Not only it can guarantee smaller magnetic gap, but also can effectively inhibit polarization phenomena, and manufacturing process is easy.
Description
Technical field
The present invention relates to a kind of loud speakers, and in particular to one kind uses in the intelligent movables equipment such as mobile phone, tablet computer
Microspeaker.
Background technology
In the intelligent movables equipment such as mobile phone, tablet, loud speaker is widely used, with intelligent movable equipment
Development, has more next higher requirement to loud speaker in voice and musical qualities, reliability, weight, size etc..
The existing Microspeaker used in the intelligent movables equipment such as mobile phone includes mainly vibrational system, magnetic circuit system
System and accommodate and support vibrational system and the frame and protecgulum of magnetic circuit system.Vibrational system includes vibrating diaphragm and the driving vibrating diaphragm
The voice coil of vibration, voice coil are attached thereto in the side of vibrating diaphragm, and top dome is equipped with above vibrating diaphragm.Magnetic circuit system includes mainly magnet steel and patch
Invest the magnetic conductive board etc. on magnet steel surface.Class is disclosed in patent CN201520257565.8 and patent CN201310659401.3
As loud speaker, Patent CN201520257565.8 more clearly discloses existing single body construction for loudspeaker, patent
CN201310659401.3 then discloses loudspeaker monomer and is installed to formation loud speaker module in shell and raises in more detail
The technical solution that sound device module is used cooperatively with terminal electronic product.
Since intelligent movable apparatus field is higher and higher to the reliability of speaker product and the requirement of micromation, internal magnetic
The requirement of gap and outer magnetic gap is also just higher and higher, and the magnetic gap increasingly reduced also can be more and more sensitive to the polarization of vibrating diaphragm.
The root that polarization generates is the intrinsic diaphagras of vibrating object.Especially high power driving under, be easier by
Excitation, causes diaphragm rocking vibration, voice coil diaphragm can be followed to do rocking vibration, and collision abnormal sound is generated with magnetic circuit component.
Have in the prior art and the means of polarization problem are solved as additional support members using centring disk, but it is existing
Technological means generally requires the components such as additional alternations frame and can occupy more space, and manufacture and assembly technology are more complicated,
Cost is also higher.
As another thinking, CN104768111B disclose it is a kind of inhibit polarization speaker unit, it is a kind of adjustment raise
The method of sound device vibrating diaphragm equilbrium position and a kind of method that the adjustment diaphragm of loudspeaker is pliable, including：Vibrational system, magnetic circuit system
The first consistent electret layer of system, the shell and charge polarity for accommodating vibrational system and magnetic circuit system, the second electret layer and
Third electret layer；First electret layer depends on vibrational system, and the second electret layer depends on first on vibrational system
Fixed component and opposite with the first electret layer, third electret layer depends on the second fixed component under vibrational system simultaneously
And it is opposite with the first electret layer；And the first electret layer, the second electret layer and third electret layer are mutually parallel.This hair
It is bright to inhibit polarization of the vibrating diaphragm on direction of vibration, electrostatic field force to provide, be not required to by electret layer using applied force of electrostatic field
Want extrinsic motivated signal and it is simple for assembly process, inhibition is good.However each electret layer or viscous in the technological means
The coating process of the electret film connect/electret pole plate is relatively difficult, it is difficult to efficiently ensure that its effect is realized；And it needs
It is further adjusted in the fabrication process or after the completion of manufacture, at present, reliability and manufacture efficiency are relatively low.
Invention content
In view of situation above, the present invention propose it is a kind of not only having can guarantee smaller magnetic gap, but also can effectively inhibit polarization phenomena,
And the loud speaker of manufacturing process simplicity.
Loud speaker according to the present invention has vibrational system and magnetic circuit system, and vibrational system includes upper diaphragm component and drive
The voice coil of the dynamic upper diaphragm component vibration；Magnetic circuit system includes intermediate magnet steel and is attached in the intermediate magnet steel surface
Between magnetic conductive board, be additionally provided with outer steel around intermediate magnet steel, the top of outer steel is equipped with upper conduction magnetic board, outer steel and intermediate magnet steel
Lower section is equipped with lower magnetic conductive board, and the gap passed through for voice coil is equipped between upper conduction magnetic board and intermediate magnetic conductive board；The voice coil at least portion
Divide and is suspended between intermediate magnet steel and outer steel；Further include lower diaphragm unit, the lower diaphragm unit includes gasket and lower ring,
The gasket is attached at the lower surface of voice coil, and one end of lower ring is attached at the lower surface of gasket, and the other end of lower ring attaches
In the lower surface of outer steel.
Further, the upper diaphragm component includes ring and the top dome that is attached on ring, voice coil be fixed on ring and/
Or below top dome.
Preferably, the lower ring has the arch segmental arc consistent with ring bending direction.
Preferably, the outer steel is integral type loop configuration.
Preferably, the edge of the lower magnetic conductive board is equipped with evacuation notch, and the evacuation notch is set to lower diaphragm unit
Lower section, and projection size of the lower diaphragm unit on lower magnetic conductive board is less than the size of the evacuation notch.
Preferably, the centre of the lower magnetic conductive board is equipped with lower concave part.
Preferably, the centre of the lower magnetic conductive board is equipped with lower concave part, and the concave part is in the lower section of voice coil；Lower concave part
Size is more than projection size or the lower concave part of the voice coil on lower magnetic conductive board and is extended upwardly in the side of setting evacuation notch
Intersect with the evacuation notch.
Preferably, the lower diaphragm unit is equipped with the both ends that diaphragm unit under two groups, two groups is symmetricly set on voice coil altogether.
Further, the both ends of the lower magnetic conductive board are respectively equipped with an evacuation notch, and each notch that avoids corresponds to respectively
The lower position of the diaphragm unit under one group is set.
Further, the magnetic circuit system and vibrational system are fixed in frame, and weld tabs, weld tabs point are equipped in the frame
It is not connect with the connecting line of the coil lead of voice coil and external feed-in electric signal.
After taking technology proposed by the present invention, according to the technique and scheme of the present invention, there is advantageous effect below：
1) improve polarization degree when voice coil movement；It is compared with the micro- electroacoustic trumpet of existing routine, the Small diaphragm-piece (lower film having more
Piece component) optimization polarization anomaly, reduces the exception for hitting magnetic circuit component in voice coil polarization process, promotes product service life.
2) outer steel combines the driving force for increasing product by interior external magnetic circuit space structure, than routine using integrated design
The external magnetic circuit fission deisgn product of more magnetic products has stronger anti-drop breakdown strength.On the other hand, outer steel may be used viscous
It connects technique to fix, on technique for sticking, integrated design outer steel can save bonding process, promote operating efficiency and reduce artificial
Cost.
3) lower ring is arranged in the lower surface of outer steel, the magnetic circuit of ring loud speaker will not be broken in this way, need not separately set
Support member is set, need not also be arranged from frame or other components and stretch into the structure of inside loudspeakers to provide support fixed work(
Energy.Polarization anomaly can not only be optimized, and ensure that minimum on magnetic circuit influence, it is often more important that ensure the minimum of volume,
Product manufacturing and assembly technology are easy.
4) it is bonded on voice coil by setting gasket and makes up drop, and can provide lower ring enough oscillation spaces, and
The manufacture and assembling of gasket are very convenient.
5) voice coil driving sky is avoided by the lower concave part of the evacuation notch and sinking step design that are arranged on lower magnetic conductive board
Between, it can be ensured that the oscillation space of lower diaphragm unit；Meanwhile the sinking step design of lower magnetic conductive board, both ensured that intermediate magnetic circuit had
Larger space availability ratio has the space that certifiable voice coil vibrates downwards.
6) it can improve, can realize the target for improving polarization and protect on existing Microspeaker architecture basics
The smaller structure size of card, reduces manufacture, assembly cost, ensures reliability of structure.
Description of the drawings
Fig. 1 is the loadspeaker structure exploded view of the application；
Fig. 2 is the loud speaker sectional view of the application；
Fig. 3 is the portions the A enlarged view of Fig. 2；
Fig. 4 is the lower magnetic conductive board structure chart of the application.
Specific implementation mode
The present invention is described in further detail for the embodiment provided below in conjunction with attached drawing.Described embodiment packet
It includes and helps the various details that understand, but they can only be counted as being illustratively a part of the embodiment of the invention, and
The embodiment being not all of.Meanwhile in order to keep specification more clear succinct, will omit pair it is well known that function and construction
Detailed description.
Unless otherwise defined, the technical term or scientific term used herein should be in fields of the present invention and has
The ordinary meaning that the personage of general technical ability is understood."upper" described herein, "lower" or " top ", " lower section " are the application
The upper and lower relation that attached drawing is substantially shown.When placement status changes, such as when overturning, corresponding position relationship also should be with
Conversion to understand or implement the technical solution of the application.
A kind of loud speaker has vibrational system and magnetic circuit system, vibrational system includes upper diaphragm group as depicted in figs. 1 and 2
Part 10 and the voice coil 20 for driving the upper diaphragm component 10 to vibrate；Magnetic circuit system include intermediate magnet steel 30 and be attached at it is described in
Between 30 surface of magnet steel intermediate magnetic conductive board 40, be additionally provided with outer steel 31 around intermediate magnet steel 30, the top of outer steel 31 is equipped with upper
The lower section of magnetic conductive board 42, outer steel 31 and intermediate magnet steel 30 is equipped with lower magnetic conductive board 41, upper conduction magnetic board 42 and intermediate magnetic conductive board 40 it
Between be equipped with the gap passed through for voice coil；The voice coil 20 is at least partly suspended between intermediate magnet steel 30 and outer steel 31；It is described
Magnetic circuit system and vibrational system are fixed in frame 60, in the frame 60 be equipped with weld tabs 61, weld tabs 61 respectively with voice coil 20
The connecting line connection of coil lead and external feed-in electric signal.
Further, incorporated by reference to shown in Fig. 1 to Fig. 3, the loud speaker of the present embodiment further includes lower diaphragm unit 50, under described
Diaphragm unit 50 includes gasket 51 and lower ring 52, and the gasket 51 is attached at the lower surface of voice coil 20, one end of lower ring 52
It is attached at the lower surface of gasket 51, the other end of lower ring 52 is attached at the lower surface of outer steel 31.The lower diaphragm unit 50
It is equipped with the both ends that diaphragm unit 50 under two groups, two groups is symmetricly set on voice coil 20 altogether.
The upper diaphragm component 10 includes ring 11 and the top dome 12 being attached on ring 11, and voice coil 20 is fixed on ring 11
12 lower section of top dome and/or.The lower ring 52 has the arch segmental arc consistent with 11 bending direction of ring.
Further, the outer steel 31 is integral type loop configuration.
Further incorporated by reference to shown in Fig. 1, Fig. 2 and Fig. 4, the edge of the lower magnetic conductive board 41 is equipped with evacuation notch 410, described
Evacuation notch 410 is set to the lower section of lower diaphragm unit 50, and projection size of the lower diaphragm unit 50 on lower magnetic conductive board 41
Less than the size of the evacuation notch 410.The both ends of lower magnetic conductive board 41 are respectively equipped with an evacuation notch 410, and each evacuation lacks
Mouth 410 is correspondingly arranged at the lower position of diaphragm unit 50 under one group respectively.
The centre of the lower magnetic conductive board 41 is equipped with lower concave part 411, and the lower concave part 411 is located at the lower section of voice coil 20；It is recessed
The size in portion 411 is more than projection size or the lower concave part 411 of the voice coil 20 on lower magnetic conductive board 41 and avoids notch in setting
410 side is extended upwardly to intersects with the evacuation notch 410.
According to the loud speaker of the application, the gasket 51 is attached at the lower surface of voice coil 20, and one end of lower ring 52 attaches
In the lower surface of gasket 51, the other end of lower ring 52 is attached at the lower surface of outer steel 31 and the top dome 12 is attached at
On ring 11, glue bonding or insert injection moulding mode may be used or other feasible modes realize attaching.Similar, upper magnetic conduction
The lower surface of plate 42 and the upper surface of outer steel 31 and outer steel 31 and lower magnetic conductive board 41, lower magnetic conductive board 41 and intermediate magnet steel
The corresponding surface contacted can also use glue bonding or other feasible between 30 and intermediate magnet steel 30 and intermediate magnetic conductive board 40
Mode realize attaching.Glue bonding or insert injection moulding mode may be used in voice coil 20 or other feasible modes are fixed on top dome
12 and/or ring 11 on.
Intermediate magnet steel 30 and 31 surrounding of outer steel form magnetic field, and by intermediate magnetic conductive board 40, upper conduction magnetic board 42 and under lead
Magnetic sheet 41 optimizes magnetic field, and the voice coil 20 is at least partly suspended between intermediate magnet steel 30 and outer steel 31, voice coil 20
It is passed into electric current when in use to the forced vibration in magnetic field, and drives 10 vibration sounding of upper diaphragm component.
Using voice coil driving, diaphragm design, 20 upper and lower ends of voice coil are connected to upper diaphragm group to the loud speaker of the application respectively up and down
Part 10 and lower diaphragm unit 50, there are two lower diaphragm units 50, is symmetric, and is mainly made of lower ring 52 and gasket 51.
Totally three diaphragms, upper diaphragm component 10 mainly convert kinetic energy into acoustic energy, lower diaphragm unit to the driving of voice coil 20 up and down
50 mainly improve polarization degree when voice coil movement；It is compared with the micro- electroacoustic trumpet of existing routine, Small diaphragm-piece (the lower diaphragm having more
Component 50) optimization polarization anomaly, reduces the exception for hitting magnetic circuit component in 20 polarization process of voice coil, promotes product service life.
Lower diaphragm unit 50 is positioned over 20 bottom of voice coil, and when polarization situation occurs for main vibrating diaphragm, that is, upper diaphragm component 10, auxiliary vibrating diaphragm is
Lower diaphragm unit 50 is played a supporting role in 20 bottom of voice coil, is maintained 20 normal up-down vibration state of voice coil, is avoided and magnetic circuit
System collision generates abnormal sound.
The outer steel 31 of the application using integrated design, intermediate magnet steel 30, intermediate magnetic conductive board 40, lower magnetic conductive board 41, on lead
Magnetic sheet 42 and outer steel 31 constitute interior external magnetic circuit, and the driving force for increasing product is combined by interior external magnetic circuit space structure.External magnetic circuit
In magnet steel using integrated design, than the external magnetic circuit fission deisgn product of conventional more magnetic products have it is stronger it is anti-drop destroy it is strong
Degree.On the other hand, outer steel 31 may be used technique for sticking and fix, and on technique for sticking, integrated design outer steel can be saved
Bonding process promotes operating efficiency and reduces cost of labor.
The loud speaker of the application is in order to realize compact layout, to reduce the thickness and length dimension of loud speaker, obtain compared with
Lower ring 52 is arranged under outer steel 31 convenient for preferably being applied in the electronic products such as mobile phone for small loud speaker volume
Surface will not break the magnetic circuit of ring loud speaker in this way, and support member need not separately be arranged, also need not be from frame 60 or other portions
Setting stretches into the structure of inside loudspeakers to provide support fixed function on part, because latter two method not only can be because of increased portion
Part/structure and widen size to expand overall volume, and the complexity on product manufacturing and assembly technology can be caused, increased
Cost is added.Ring 52 can not only optimize polarization anomaly under the application setting, and ensure that on magnetic circuit influence minimum, more important
The minimum for being to ensure that volume, volume will not be increased because lower ring 52 is added, product manufacturing and dress will not be caused
With technologic complexity, the application only needs lower ring 52 being bonded on the component of magnetic circuit system.
The lower diaphragm unit 50 of the application is arranged in the bottom of voice coil 20, on fabrication technology for it is convenient to carry out.
If the side wall in voice coil 20 is arranged, not only need to occupy magnetic gap space, to cause the increase of magnetic gap, between smaller magnetic
The demand of gap is runed counter to；And manufacture assembly when implement it is relatively difficult, if in order to reduce technology difficulty increase magnetic gap, can have
Same drawback causes the increase of component and overall dimensions.
The lower diaphragm unit 50 of the application is equipped with diaphragm unit 50 under two groups, two groups and is symmetricly set on the two of voice coil 20 altogether
End, ring setting are advisable in short side.The target of optimization polarization anomaly is realized by the limitation at both ends, and because is closely limited
Voice coil 20 only need to occupy smaller space, can increase magnetic circuit so need not spread all over voice coil periphery can reach desired effects
The optimization of properties of product is convenient in the space of magnet steel in system.If being respectively provided with auxiliary diaphragm in the four direction of voice coil 20 to be limited
System, then can lose more magnet steel spatial volume.Importantly, the application is by being arranged annular outer steel 31 and by auxiliary film
Piece is set to the lower section of outer steel 31, can more increase the space for magnet steel use in magnetic circuit system/occupy, be conducive to performance boost
Optimization.
On the other hand, gap is not limited the lateral dimension of the lower diaphragm unit 50 of the application between by voice coil and shell,
Structure is more flexible, can be arbitrarily sized.For the maximization of magnet volume, the transverse direction of the lower diaphragm unit 50 of the application
Size can accomplish to minimize.Certainly, it according to the performance needs of loud speaker, can also be adjusted round about, the two can
It is adjusted design to cooperate.
Between the lower ring 52 and voice coil 20 of the lower diaphragm unit 50 of the application voice coil 20 is bonded in by the way that gasket 51 is arranged
On make up drop.The other end of lower ring 52 connects, and needs to be bonded on voice coil 20, because lower ring 52 is arranged in outer steel 31
Lower surface, there are larger drops between lower ring 52 and voice coil 20.Voice coil 20 and lower ring 52 are accepted by using gasket 51,
Not only drop can be reduced, but also can provide lower ring 52 enough oscillation spaces, and the manufacture and assembling of gasket 51 are very convenient.
The application is kept away by the lower concave part 411 of the evacuation notch 410 and sinking step design that are arranged on lower magnetic conductive board 41
Voice coil 20 is allowed to drive space.The region of the lower diaphragm unit 50 under correspondence of magnetic conductive board 41 carries out notch design, it can be ensured that lower film
The oscillation space of piece component 50, the sinking step design of lower magnetic conductive board 41 had both ensured that intermediate magnetic circuit had larger space availability ratio,
Ensure that the space that voice coil 20 vibrates downwards.Be conducive under the product thickness of limitation to 50/ time ring of lower diaphragm unit 52
More oscillation spaces are provided, in other words, in the case where equal performance requires, smaller integral thickness can be obtained.
Claims (10)
1. a kind of loud speaker, it includes described in upper diaphragm component (10) and driving to have vibrational system and magnetic circuit system, vibrational system
The voice coil (20) of upper diaphragm component (10) vibration；Magnetic circuit system includes intermediate magnet steel (30) and is attached at the intermediate magnet steel
(30) the intermediate magnetic conductive board (40) on surface, intermediate magnet steel (30) surrounding are additionally provided with outer steel (31), and outer steel is set above (31)
Have a upper conduction magnetic board (42), the lower section of outer steel (31) and intermediate magnet steel (30) is equipped with lower magnetic conductive board (41), upper conduction magnetic board (42) and
The gap passed through for voice coil is equipped between intermediate magnetic conductive board (40)；The voice coil (20) is at least partly suspended in intermediate magnet steel (30)
Between outer steel (31)；It is characterized in that, further including lower diaphragm unit (50), the lower diaphragm unit (50) includes gasket
(51) and lower ring (52), the gasket (51) are attached at the lower surface of voice coil (20), and one end of lower ring (52) is attached at pad
The other end of the lower surface of piece (51), lower ring (52) is attached at the lower surface of outer steel (31).
2. a kind of loud speaker according to claim 1, which is characterized in that the upper diaphragm component (10) includes ring (11)
With the top dome (12) being attached on ring (11), voice coil (20) is fixed below ring (11) and/or top dome (12).
3. a kind of loud speaker according to claim 2, which is characterized in that the lower ring (52) has curved with ring (11)
Arch segmental arc consistent Qu Fangxiang.
4. a kind of loud speaker according to claim 1, which is characterized in that the outer steel (31) is integral type ring junction
Structure.
5. a kind of loud speaker according to claim 1, which is characterized in that the edge of the lower magnetic conductive board (41) is equipped with evacuation
Notch (410), the evacuation notch (410) is set to the lower section of lower diaphragm unit (50), and lower diaphragm unit (50) is under
Projection size on magnetic conductive board (41) is less than the size of the evacuation notch (410).
6. a kind of loud speaker according to claim 1 or 5, which is characterized in that the centre of the lower magnetic conductive board (41) is equipped with
Lower concave part (411).
7. a kind of loud speaker according to claim 5, which is characterized in that the centre of the lower magnetic conductive board (41) is equipped with recessed
Portion (411), the lower concave part (411) are located at the lower section of voice coil (20)；The size of lower concave part (411) is led more than voice coil (20) under
Projection size or the lower concave part (411) on magnetic sheet (41) extend upwardly to and institute in the side of setting evacuation notch (410)
Evacuation notch (410) is stated to intersect.
8. according to a kind of loud speaker described in any one of claim 1,2,3,4,5 or 7, which is characterized in that the lower film
Piece component (50) is equipped with the both ends that diaphragm unit (50) under two groups, two groups is symmetricly set on voice coil (20) altogether.
9. a kind of loud speaker according to claim 8, which is characterized in that the both ends of the lower magnetic conductive board (41) are respectively equipped with
One evacuation notch (410) each avoids the lower orientation that notch (410) is correspondingly arranged at diaphragm unit (50) under one group respectively
It sets.
10. a kind of loud speaker according to claim 1, which is characterized in that the magnetic circuit system and vibrational system are fixed on
In frame (60), in the frame (60) be equipped with weld tabs (61), weld tabs (61) respectively with the coil lead of voice coil (20) and outside
The connecting line of feed-in electric signal connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591784.8A CN108712707A (en) | 2018-06-11 | 2018-06-11 | Loud speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591784.8A CN108712707A (en) | 2018-06-11 | 2018-06-11 | Loud speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108712707A true CN108712707A (en) | 2018-10-26 |
Family
ID=63872115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810591784.8A Pending CN108712707A (en) | 2018-06-11 | 2018-06-11 | Loud speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108712707A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110149580A (en) * | 2019-05-10 | 2019-08-20 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2020119236A1 (en) * | 2018-12-10 | 2020-06-18 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| CN112073882A (en) * | 2020-09-11 | 2020-12-11 | 常州市润蒙声学科技有限公司 | Dual-drive loudspeaker capable of producing sound on two sides |
| WO2021174572A1 (en) * | 2020-03-05 | 2021-09-10 | 瑞声声学科技(深圳)有限公司 | Loudspeaker enclosure |
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| CN207083226U (en) * | 2017-08-02 | 2018-03-09 | 瑞声声学科技(常州)有限公司 | Magnetic speaker |
| CN107396267A (en) * | 2017-08-30 | 2017-11-24 | 歌尔股份有限公司 | Minitype acoustic generator |
| CN208445745U (en) * | 2018-06-11 | 2019-01-29 | 常州市润蒙声学科技有限公司 | A kind of loudspeaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020119236A1 (en) * | 2018-12-10 | 2020-06-18 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| CN110149580A (en) * | 2019-05-10 | 2019-08-20 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2021174572A1 (en) * | 2020-03-05 | 2021-09-10 | 瑞声声学科技(深圳)有限公司 | Loudspeaker enclosure |
| CN112073882A (en) * | 2020-09-11 | 2020-12-11 | 常州市润蒙声学科技有限公司 | Dual-drive loudspeaker capable of producing sound on two sides |
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